Pharmacologically active compounds of formula I ##STR1## which can be substituted in the phenyl rings and in which R.sup.1 denotes hydrogen or lower alkyl,R.sup.2 denotes hydrogen or lower alkyl,Y denotes oxygen or sulfurn represents an integer from 1 to 3Z represents a bond, a CO group or a CH.dbd. group,Q denotes nitrogen or the CH group andR.sup.7, if Q denotes nitrogen, represents an optionally substituted pyridyl or phenyl radical or, if Q denotes the CH group, represents the N-methyl-N-(4-oxo-3H-pyrimidin-2-yl)amino group,and their acid addition salts and processes and intermediates for their preparation.